Accelerator-Based Slip Target Control for EV Traction Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control systems struggle to efficiently manage traction and motor torque on various road surfaces, leading to energy loss and reduced battery performance in electric vehicles.
Innovation Solution
The system adjusts slip targets for vehicles based on user input and surface friction levels, allowing for dynamic control of motor torque to improve traction and reduce energy loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional fixed slip targets are used in traction control systems, then the system structure remains simple, but energy loss increases and battery performance deteriorates on various road surfaces
Solution Approach 1:
The patent implements dynamic adjustment of slip targets based on real-time detection of accelerator pedal position and road surface friction levels. The slip target is no longer fixed but varies continuously according to driver input and environmental conditions, allowing the traction control system to optimize energy efficiency across different driving scenarios and road surfaces
Solution Approach 2:
The system changes the slip target parameter dynamically by detecting accelerator pedal position and friction level, then selecting appropriate slip target modifiers from predefined sets. This parameter adjustment enables the system to reduce energy loss by matching slip characteristics to actual driving conditions and surface properties
2Reliability
If motor torque is increased to improve traction on low-friction surfaces, then vehicle mobility improves, but energy consumption increases
Solution Approach 1:
The system adjusts the slip target parameter based on detected friction levels and accelerator pedal position, optimizing motor torque application. By changing the slip target to match road conditions, the system maintains reliable traction control while minimizing excessive torque that would waste energy, particularly on low-friction surfaces where optimal slip characteristics differ from high-friction surfaces
3Ease of operation
If slip targets are adjusted dynamically based on accelerator pedal input, then driver control precision improves, but system complexity increases
Solution Approach 1:
The system continuously monitors accelerator pedal position and uses this feedback to adjust the slip target in real-time. This closed-loop control enhances driver control precision by ensuring the traction control system responds appropriately to driver intentions, while the automated nature of the feedback mechanism keeps the added complexity manageable
Solution Approach 2:
The slip target becomes a dynamic parameter that automatically adjusts based on accelerator pedal position and friction level detection. This dynamic adaptation improves driver control by matching system behavior to actual driving conditions without requiring complex manual adjustments, as the system autonomously optimizes parameters based on sensor inputs
Data Source
AI summary
Slip target adjustment based on an accelerator pedal is provided. A system can detect an amount of torque requested for a vehicle. The system can determine a friction level associated with a surface on which the vehicle traverses. The system can select a slip target modifier. The selection can be based on the amount of torque requested for the vehicle and the friction level. The system can adjust a slip target used by a traction control system of the vehicle. The adjustment can be based on the slip target modifier.